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Finding the Fourth Proportional to 3,576.42, 5,364.63 and 979.38

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Solution

The fourth proportional to 3,576.42, 5,364.63 and 979.38 is: 1,469.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,576.42 : 5,364.63 = 979.38 : x
  2. Step 2: Convert to fraction form
    3,576.42/5,364.63 = 979.38/x
  3. Step 3: Cross multiply
    3,576.42x = 5,364.63 × 979.38
  4. Step 4: Simplify right side
    3,576.42x = 5,254,011.33
  5. Step 5: Solve for x
    x = 5,254,011.33/3,576.42
  6. Step 6: Final answer
    x = 1,469.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.